There is a cue and that's what I meant by the timing must be perfect.
Originally Posted by MadScientistOfMaB
In a physics class in college and from what I have learned there is no difference as far as weight is concerned. All of the kinetic energy is in the x direction and so it doesnt have a component in the y direction.
It could however be a cue. A lot of powerlifters are ritualistic about their lifts. It may just be doing the same thing the same way every time that is important.